You’ve accepted the idea that TV makes you dumber. You know there are lots of more edifying things you could be doing with your time than cheering on the contestants on “Survivor.”

And unless you’re working out to an exercise video, you know those hours sprawled out in front of the screen are going to make you fatter — not to mention the impact of all that junk food you’ve been tempted to scarf down during the commercial breaks.

But you’ll be surprised to learn the host of other bad things TV can do to you.